Mr Chalmers, a history student at Oriel College, announced his resignation on Monday after the club voted to support Israel Apartheid Week which campaigns on what it calls Israel’s “apartheid policies”.

The organisation Labour Students is investigating.

A spokesman said: “We are taking these allegations very seriously.

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Mr Chalmers is a history student at Oriel College

"We will do whatever is necessary to ensure every Labour club is a safe space for Jewish students.”

Welcoming the inquiry, a Labour spokesman insisted that the party “condemns anti-Semitism in any form”.